Lighting guidelines will vary depending on whether your succulent is indoors or outside. You should provide sufficient lighting and water your succulents once the soil has dried. You might find that the soil can dry out too fast in summer and leave your plant without adequate water. These tiny plants can grow up to four inches tall and twelve inches in diameter. They can do well in a window sill on a south or west-facing window. We think a modern white window sill planting container like this will look stunning with the Bishop’s Cap cactus.